Liquid-heating device



' F. H. WICKES ET AL Feb. 12 1924;

LIQUID HEATING DEVICE Filed Feb- 28. 1922 MHz/$552k, 'Lfiarkali'ma'man Patented Feb. 12, 1924.

, UNITED STATES PATENT OFFICE.

FREDERICK H. WICKES AND CHARLES H. GOODMAN, OF ROANOKE, VIRGINIA.

LIQUID-HEATING DEVICE.

Application filed February 28, 1922.

To all whom it may concern e it known that we, FREDERICK H. VVIoKns and CHARLES H. GOODMAN, citizens of the United States, residing at Roanoke,

in the county of Roanoke and State of Virginia, have invented certain new and useful Improvements in Liquid-Heating Devices, of which the following is a specification.

This invention has reference to liquid '10 heating devices employing electricity as the heating agent.

An object of the invention is to provide an electrical heater capable of being readily submerged in milk, water or other liquid to be heated, and so arranged as to conduct a current of electricity thru such liquids, thereby quickly heating the same.

A further and additional object is to pro vide an electrical heater in the nature of a portable article of a size convenient for traveling and embodying detachable parts which may be separated for packing the device into a small space.

A further object of the invention is to produce a device of the above character that is simple in construction, strong and durable, and which it is believed may be manufactured at a reasonably low cost.

Various other ObJBClJS and advantages of the invention will become apparent from the following description.

In the drawings:

Figure 1 is a view of the proposed device in side elevation.

Figure 2 is a bottom plan view thereof.

Figure 3 is a longitudinal section taken on line 3-3 of Figure 1.

Figure 4 is a transverse, horizontal, section taken on line 4-4 of Figure 1, and

Figure 5, is a view of the upper or slotted end of the shield.

In the drawings 10 indicates the handle of the device which has means, in the nature of a book 11, provided at its upper end for hanging the device up when not in use.

Handle 10 is further provided with a longitudinally extending central bore 12 thru which is inserted an electric cord 13 which carries a plug 14 for engagement with any suitable plug socket whereby the heater may be connected up with a source of current supply. The lower end of the handle 10 screws into a cap 15 from which depends a core 16 of insulating material. This core is 56 provided with upper and lower flanges as Serial No. 540,058.

shown respectively at 17 and 18, and an intermediate portion or shank which is grooved to receive a suitable number of coils of the resistance wire 19, as illustrated in Figure 3. The outer flange 17 of the core is provided with flat places 20 against which bears clamp screw 21 carried by cap 15, these screws serving to hold the core members securely in place. The upper and lower flanges of the core member are respectively notched, as at 22 to permit the opposite ends of resistance wire 19 to extend inwardly and upwardly through the center hole or bore 23 of the cord, so as to connect with core 13 as shown in Figure Suitable plastic material such as plaster Paris may be poured into the center hole of the core member and into the notches therein so as to provide an insulating covering for the respective ends of the resistance wire as indicated at 24:. It will thus be apparent that when plug 14: is suitably engaged in an electrical socket that a current of electricity will flow through the resistance wire coiled about the core member and hence will provide a heating agency whereby liquid may be readily and almost instantly heated when the energized resistance coil is brought in contact therewith.

A protector for the coil is provided by means of a tubular shield 25, the upper end of which is slotted, as at 26, and inserted under cap 3 to which it is secured by means of screw 27. This shleld is provided with laterally spaced vertical slots 28 which permits the liquid to circulate about the core.

This device may be used for heating liquid in small quantities by the submerging of the core portion into the liquid so that the current passing thru the resistance coil will effect an almost instantaneous heating of the liquid. When not in use the device may be readily dismantled, owing to the fact that the various parts are detachable and, hence may be placed away in a small space.

From the foregoing it is believed that the advantages and novel features of the invention can be readily understood and that further detailed description. is deemed unnecessary.

What is claimed is:

An electrical heater comprising a cap, a centrally bored handle connected to the cap, a core member depending from the said cap and having a central bore aligning with the bore of the said handle, said core presenting upper and lower flanges having slots opening radially from the said central bore, a resistance coil encircling the said core between the said flanges and having the opposite terurinal-wires extending inwardly of the said radial opening and upwardly thru the said aligned bores of the handle and the core member, a filler of plastic material within the said central bore and radial slots of the 10 said core and enveloping the said terminal wires of the said coil, and a tubular shield encircling the said bore and supported by the flanges thereof in spaced relation to the said core, said shield having perforations thru which the said coil is exposed.

In testimony whereof we afiix our signature.

FRED. H. WICKES. CHAS. H. GOODMAN. 

